The ornamental design for a chair/ottoman base, as shown and described.
FIG. 1 is a perspective view of a chair/ottoman base embodying my new
design, with a chair supported by the base being shown in broken lines for
illustrative purposes only and forming no part of the claimed design.
FIG. 2 is a top plan view of the chair/ottoman base of FIG. 1.
FIG. 3 is a bottom plan view of the chair/ottoman base of FIG. 1; and,
FIG. 4 is a front elevational view of the chair/ottoman base of FIG. 1.